SPECIAL REPAIRS TO LEAKY ROOF OF NORTH ZONE QUARTERS AT HVF ESTATE, AVADI

Amount

Demolition of (unreinforced) cement Concrete / Lime Concrete with brick tiles etc., show to mother concret slab, of any description and in any position not otherwise specifically provided for and removing Rocks debris from roof to part there of beyond 500 m and upto total distance of not exceeding 1.50 km as approved by EIC

Material and Labour for cutting out wall cracks to V-section in existing roofs or terracing and walls etc., Taking down plastering / cement dado / terazzo or cement lime plaster, cleanig out and application of polyurathene based sealant for filling of wall cracks upto 20 mm width and 10 mm depth. PU Sealant material shall have elongation more than 700%, wetting, of any description, grouting rag bolts or rag angle iron service bracket, Hexagonal Chicken wire Mesh Galvanized with wire nail and making good with cement mortar 1:3 including making good finishing to match the existing work before wall plastering tie to chicken wire mesh using nail and as approved by EIC.

Material and Labour for plastering in CM 1:4, 15 mm thick on fair faces of brick work and concrete surfaces.

Supply of Liquid water proofing compound for plastering in wall / roof surfaces. The make of Liquid water Proofing compound should be got approved by EIC.

Removal of existing old damaged Bitumen felt layer including removing of all residual bitumen and primer including of all traces using hand buffing machine / mosaic polishing machine and depositing the removed materials to a distance not less than 1 km.

Supply and Application of Polyurethane based sealan for filling of visible cracks up to 10 mm width and 5 mm depth. PU sealant material shall have elongation more than 700%. The Contractor shall use (Hyperseal expert 150 of Alchemica / Seal Arm PU of MYK Arment/ SNF one plus P590 of Bostik/ Masterseal NP 473 U of Master Builders Solutions / Cipoxy 16 D of Dr.Fixit) (or) Suitably equivalent make as approved by EIC and finishing the top surface.

Material and Labour for preparation of Expansion joint by cleaning / removal of all old loose particles inside the joint and making the joint dust free and fit for new application. Material and labour for application of specially formulated PU sealant having elongation more than 700% shall be used by the Contractor. The Contractor shall use (HYPERSEAL EXPERT 150 of Alchemica, Seal N Flex 1 of Bostik or equivalent in STP, BASF or CIPY Make) (or) Suitably equivalent make. The PU Sealant shall be applied over a primer base coat like (MICROSEALER 50 of Alchemica N49 Primer of Bostik or equivalent to STP, BASF or CIPY Make) (or) Suitably equivalent make, including all necessary arrangements for complete leak proof expansion joint (width of expansion joint vary from 20 mm to 40 mm and depth 150 mm to 200 mm) depending on site conditiosn.

Supply and Application of seamless Polyurethane (PU) based elastomeric coating exposable to atmospehre. The work consisting:- a) Supply and Application of PU based primer minimum of 100 gms per SqM. b) Supply and Application of seamless PU based elastomeric coating over a primer coat to achieve a thickness of 1.5 mm DFT in two coats, with an application rate of minimum 2.1 Kg/SqM, having minimum solid content (ASTM 836) of more than 85% and elongation also more than 400%. c) Supply and Application of Protective UV top coat @ 0.25 Kg/SqM {The Contractor shall use the material from the reputed manufacturers such as ("Master Builders Solutions", "MYK Arment", "Dr. Fixit", "Alchemica", "Bostik" "Technopol") (or) Suitably equivalent make only as approved by EIC}.

Disconnection of existing tanks Exc 500 L & not Exc 1000 L, Setting aside (or lowering if required) for repairs, cleaning etc., and hoisting if required re-connecting and re-fixing in position.

Supply and Fixing of 25 mm Unplasticised PVC pipes of pressure rating 10 kgf/cm2 fixed complete to walls, ceilings or in floors etc., any type of pipe.

Siva Enterprises

AMUTHA ENGINEERING AND CONSTRUCTION